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Neuroanatomy Test1 > Vasculature > Flashcards

Flashcards in Vasculature Deck (36):
1

What are the 4 parts of the vertebral artery?

cervical
intrapetrosal
intracavernous
Cerebral (intracranial)

2

What main artery provides anterior circulation to the brain

Internal carotid artery

3

What are the main 7 branches of the Internal Carotid Artery?

Hypophysial Artery
Ophthalmic arteries
Middle cerebral artery
Anterior choroidal artery
Posterior Communicating artery
Anterior Cerebral Artery
Anterior Communicating Artery

4

What artery supplies subcortical structures in the temporal lobe including the choroid plexus

Anterior choroidal Artery

5

What artery emerges from lateral fissure

Middle Cerebral Artery

6

What artery supplies insula of Reil

Middle Cerebral Artery

7

What artery has cortical branches that supply cortex and subcortical white of the lateral surface of frontal, parietal, and temporal lobes and lateral side of inferior frontal lobe

Middle cerebral Artery

8

What artery is located in the longitudinal fissure?

Anterior cerebral Artery

9

What Artery has cortical branches (gray and subcortical white) supply medial side of frontal and parietal lobes and medial side of orbital surface of frontal lobe (olfactory bulb & tract); corpus callosum

Anterior Cerebral Artery

10

What part of the vertebral artery is non elastic?

Fourth part

11

Before the vertebral artery enters the subarachnoid space at the level of the foramen magnum it must first pierce what membrane?

posterior atlanto-occipital membrane

12

What are the 4 branches of the Vertebral artery?

Anterior spinal artery
Posterior spinal artery
Posterior inferior cerebellar artery (PICA)

13

What are the main branches of the Basilar artery?

Anterior inferior cerebellar artery (AICA)
Internal auditory artery
Pointing artery
Superior cerebellar artery
Posterior cerebral artery

14

What artery passes through the tentorial notch?

Posterior Cerebral artery

15

Arteries from the Basilar artery wrap in what direction around the brainstem

posteriorly

16

What artery supplies inferior aspect of temporal lobe (includes hippocampus),
occipital lobe and parts of midbrain

Posterior cerebral artery

17

What are the 5 wrap around arteries?

Posterior spinal artery
Posterior inferior cerebellar artery
Anterior inferior cerebellar artery
Superior cerebellar artery
Posterior cerebral artery

18

The wrap around arteries supply what areas?

Dorsal lateral areas of their respective sections

19

What arteries supply the Cerebrum?

Middle cerebral A.
Anterior cerebral artery
Posterior cerebral artery

20

What arteries supply the cerebellum?

Superior cerebellar artery
Anterior inferior cerebellar artery
Posterior inferior cerebellar artery

21

What arteries supply the brainstem?

Pantone branches
Anterior spinal artery

22

What are the branches that make up the circle of Willis?

Posterior cerebral artery
Posterior communicating artery
Internal carotid artery
Anterior cerebral artery
Anterior communicating artery

23

What are the branches of the circle of Willis and the proximal part of the middle cerebral artery called?

Central (ganglionic/penetrating) branches

24

What are the four groups of the Central (ganglionic/penetrating) branches?

Anteromedial
Anterolateral (aka lateral striate or lenticulostriate)
Posteromedial
Posterolateral

25

What do the 4 groups of the Central (ganglionic/penetrating) branches supply

they supply diencephalic areas, internal capsule, basal ganglia, and midbrain

26

The internal capsule is supplied by what 3 arteries?

Lateral striate (lenticulostriate) branches of middle cerebral artery

Medial striate branch of anterior cerebral artery

Branches of anterior choroidal artery

27

Why does the brain need a constant flow rate of blood?

Because brain does not effectively store oxygen or glucose

28

What is it called when arterioles directly controls the contraction of smooth muscle

Intra luminary pressure

29

What is the cone range for arterial BP for the brain in terms of global cerebral flow?

65 - 140 mmHg

30

What type of Flow varies in response to local neuronal activity and therefore local metabolic demand

Regional blood flow

31

What are the 3 main functions of the Blood-Brain Barrier

Modulation of the entry of metabolic substrates

Control of ion movements

Prevention of access to the CNS by toxins

32

Brain damaged by hypertension, ischemia, infection, or cerebral tumors causes what?

B-B barrier to breakdown

33

What kind of capillaries make up the B-B barrier?

Continuous capillaries

34

Endothelial cells in the B-B barrier contain enzymes for what?

ion and metabolite transport

35

What are Circumventricular organs?

organs have no blood-brain barrier

36

What are the 3 Circumventricular organs?

Area postrema
Neurohypophysis
Pineal